JBL Tour One M2's True Adaptive Noise Cancelling technology tunes out distractions so you can enjoy your favorite playlists or even the sound of silence - all powered by legendary Hi-Res certified JBL Pro Sound. Immerse yourself in superb, spatial audio on the go for up to 50 hours or enjoy the clarity of the 4-mic technology while having phone conversations. The integrated mics even recognize your voice, so you can have quick conversations with your headphones on, thanks to the Smart Talk function. Or turn on the Personal Sound Amplification to boost yours and others' voice volume without ever removing your headphones